Tables of Logarithms of Numbers and of Sines and Tangents for Every Ten Seconds of the Quadrant: With Other Useful TablesHarper & brothers, 1859 - 150 páginas |
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Página 6
... Survey . The Traverse Table ... To find the Area of a Field Trigonometrical Surveys .. Variation of the Needle .. Leveling Topographical Maps - Setting out Rail - way Curves .. Surveying Harbors The Plane Table .... · To determine the ...
... Survey . The Traverse Table ... To find the Area of a Field Trigonometrical Surveys .. Variation of the Needle .. Leveling Topographical Maps - Setting out Rail - way Curves .. Surveying Harbors The Plane Table .... · To determine the ...
Página 92
... one end of the needle indicating the north point and the other the south . A horizontal line perpendicular to a meridian is an east and west line All the meridians passing through a survey of moderate ex- 92 TRIGONOMETRY .
... one end of the needle indicating the north point and the other the south . A horizontal line perpendicular to a meridian is an east and west line All the meridians passing through a survey of moderate ex- 92 TRIGONOMETRY .
Página 93
With Other Useful Tables Elias Loomis. All the meridians passing through a survey of moderate ex- tent , are considered as straight lines parallel to each other . The bearing or course of a line is the angle which it makes with a ...
With Other Useful Tables Elias Loomis. All the meridians passing through a survey of moderate ex- tent , are considered as straight lines parallel to each other . The bearing or course of a line is the angle which it makes with a ...
Página 103
... survey- ors is the acre , or ten square chains . One quarter of an acre is called a rood . Since a chain is four rods in length , a square chain contains sixteen square rods ; and an acre , or ten square chains , con- tains 160 square ...
... survey- ors is the acre , or ten square chains . One quarter of an acre is called a rood . Since a chain is four rods in length , a square chain contains sixteen square rods ; and an acre , or ten square chains , con- tains 160 square ...
Página 104
... Survey . When a field has been surveyed , it is easy to draw a plan of it on paper . For this purpose , draw a line to represent the meridian passing through the first station ; then lay off an an- gle equal to the angle which the first ...
... Survey . When a field has been surveyed , it is easy to draw a plan of it on paper . For this purpose , draw a line to represent the meridian passing through the first station ; then lay off an an- gle equal to the angle which the first ...
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Términos y frases comunes
9 I I altitude angle of elevation arithm base chains circle Co-sine Co-tangent complement computed correction cosecant course and distance decimal diameter diff difference of latitude difference of longitude Dist divided equal equator fifth figure find the angles find the area find the Logarithm frustum given number given the angle height Hence horizontal plane hypothenuse inches latitude and departure length LO LO LO logarithmic sine measured meridian middle latitude miles minutes Multiply natural number nautical miles parallel parallel sailing perpendicular places plane sailing Prob Prop proportional quadrant radius Required the logarithmic right-angled spherical triangle right-angled triangle Sandy Hook secant ship sails side AC spherical triangle ABC SPHERICAL TRIGONOMETRY station subtract surface tabular number tang Tangent telescope theodolite Theorem vernier vertical Vulgar Fraction wyll yards zoids ΙΙ ΙΟ
Pasajes populares
Página 20 - The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc.
Página 163 - In any spherical triangle, the sines of the sides are proportional to the sines of the opposite angles. In the case of right-angled spherical triangles, this proposition has already been demonstrated.
Página 69 - FIND the area of the sector having the same arc with the segment, by the last problem. Find also the area of the triangle, formed by the chord of the segment and the two radii of the sector.
Página 54 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Página 69 - TO THE NUMBER OF DEGREES IN THE ARC ; So IS THE AREA OF THE CIRCLE, TO THE AREA OF THE SECTOR.
Página 73 - To find the solidity of a pyramid. RULE. Multiply the area of the base by one third of the altitude.
Página vi - The characteristic of the logarithm of ANY NUMBER GREATER THAN UNITY, is one less than the number of integral figures in the given number.
Página 184 - If a heavy sphere, whose diameter is 4 inches, be let fall into a conical glass, full of water, whose diameter is 5, and altitude 6 inches ; it is required to determine how much water will run over ? AHS.